Pls help us.....While making our $50 dollar robot, we found that the motors were running in opposite directions when we kept them on the board meant to carry them.....why is this happening???pls help us..........

the servos were mounted...but i have now rectified the error...i put one servo in 180 degree lag from the other by rotating its knob from zero position...and it worked real good too...but can anyone explain how this can work??